Variable-diameter self-screening method for plastic particles

Abstract

The invention discloses a variable-diameter self-screening method for plastic particles, belongs to the technical field of screening of plastic particles, and aims to effectively prevent mutual adhesion of the plastic particles on the one hand and effectively reduce the screening temperature of the plastic particles on the other hand by washing the prepared plastic particles with water. Peripheralmaterials of inner elastic screening holes in the screen are arranged as low-temperature-contractible materials, by pre-cooling the screen, precooling expansion operation can be conducted on the holediameters of the inner elastic screening holes according to the requirement for the particle sizes of screened plastic particles, so that the screening requirement that the screen is suitable for different particle sizes is met, and therefore, the application range of the screen is expanded and it is unnecessary to replace the screen manually. In addition, after screening, a conveying belt is used for conveying the plastic particles, and water stains entrained in the plastic particles are dehumidified and dried, so that the screening and collecting effects of the plastic particles are effectively improved.

Description

technical field [0001] The invention relates to the technical field of screening plastic particles, and more specifically, relates to a method for self-screening plastic particles with variable diameters. Background technique [0002] Plastic particles, commonly known as plastic particles, are raw materials for storage, transportation and processing of plastics in the form of semi-finished products. The granulation process of the plastic granulator generally includes: extruder feeding, screw extruder extrusion, cold water tank cooling and drawing, granulator granulation, particle screening, and finished product collection. The granulator cuts the columnar plastic particles into columnar particles with a certain particle size range, and the cut particles are of different sizes, so these plastic particles should be screened. [0003] In the existing production process, due to the high temperature of the freshly prepared plastic particles, when a large number of plastic partic...

AI Technical Summary

Problems solved by technology

[0003] In the existing production process, due to the high temperature of the freshly prepared plastic particles, when a large number of plastic particles are screened intensively, it is easy to cause adhesion among the plastic particles and it is difficult to screen; Different particle size screening requirements require different screens for screening, so technicians are required to replace the screens under specific requirements, resulting in problems such as poor flexibility and low work efficiency.

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